Known bugs or issues:

- randomize each voting list

- it'd be nice if the ordering were persistent, so I could drag
  the candidates around, then come back later (loading the page anew),
  make tweaks, and submit.

- the results page says "the winner is Elizabeth Stark"; it'd be nice
  if it were aware that it's a five-seat election and could say
  explicitly who the whole board is.

- it's probably a good thing that users can't check out what alternate
  voting systems would have done at the click of a button. =)
  (though of course they could work it out themselves.)

- is there rhyme or reason to the ordering within each row of the
  second table in pref_tables?  it could be, eg, sorted by magnitude
  of victory, narrowest first.

- it'd be nice to attach names to the email identities, on eg the
  details page; in this election we'd have said MIT for gregp@mit.edu,
  Northeastern for cbudnick@gmail.com, etc.  I don't know many of these
  addresses, and names would be more informative.  (They'd be more
  helpful for auditing, too, as one could separately match names to the
  correct list and match addresses to names.)

- just a tiny suggestion - possibly it could be a good idea to add a
  counter/line-count to the table with keys and vote results so in one
  glance someone can see that the number of votes matches the number of
  voters.